| undiplomatic(adjective, rude, careless, thoughtless, unkind) |
| undiscerning(adjective, careless, indifferent, apathetic, unconcerned) |
| uninformed(adjective, thoughtless, unconcerned, ignorant, unconscious) |
| unknowing(adjective, unconcerned, ignorant, unconscious, negligent) |
| unlistening(adjective, cold, forget, uncaring, inattentive) |
| unregardful(adjective, cold, forget, uncaring, inattentive) |
| unthrifty(adjective, improvident) |
| unwitting(adjective, careless, unconcerned, sloppy, ignorant) |
| unworried(adjective, feature, state, indifferent, trait) |
| venturesome(adjective, careless, wild, thoughtless, impulsive) |
| wandering(adjective, inattentive) |
| wool-gathering(noun, adjective) |
| woolgathering(adjective, careless, remote, vague, sloppy) |
| aimless |
| airheaded(adjective, careless, remote, vague, sloppy) |
| away |
| bemused(adjective, careless, remote, vague, sloppy) |
| blase(indifferent, detached, distant, apathetic, unfeeling) |
| bored(adjective, dull, careless, indifferent, apathetic) |
| breakneck(adjective, violent, wild, fast, quick) |